/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.s2graph.counter.util

object FunctionParser {
  val funcRe = """([a-zA-Z_]+)(\((\d+)?\))?""".r

  def apply(str: String): Option[(String, String)] = {
    str match {
      case funcRe(funcName, funcParam, funcArg) =>
        funcName match {
          case x: String =>
            Some((funcName, funcArg match {
              case x: String => funcArg
              case null => ""
            }))
          case null => None
        }
      case _ =>
        None
    }
  }
}
